The news comes from Acorn Productions, the company that has managed Christie's rights since her death in 1976. Christie's family has given the go-ahead for the project.
HarperCollins will publish the new Hercule Poirot detective in September 2014. The title of the tome is still a safely kept secret.
'Lady of Crime' was the last novel to feature the detective who suffered a heart attack in its pages. It remains unclear how Sophie Hannah intends to bring Poirot back to life.